About 5 Advil and I'll be ready to go!

Somewhat in tune with the 33 aspect of my life, it seems my knees just don't like to be pounded on at the gym like perhaps they would have when I was 23. Don't get me wrong, I can do everything a 23-year-old can do and then some, but it seems that there's a lesson I really need to learn - you can't go from working out a couple times a week on a stationary bike to a full-speed workout on a higher impact machine without some pain. Perhaps building up to the level I was try to attain this evening would have been more wise, but if there's one thing I really don't like, it's when folks talk about building up and then a couple months down the road they're still in first gear. I think that's the obsessive compulsive in me. Julie says I'm all or nothing. Perhaps that is true about some things, but certainly not all. And while I'm not being critical of such an analysis, I would rather have the will and ability to switch from nothing (we'll say moderate, it's never nothing) to all than just keep my life at nothing. How sad would that be? Who am I kidding? I'm just a wimp so give me some Advil!